| ABSTRACT | 第1-7页 |
| 摘要 | 第7-11页 |
| Chapter One Introduction | 第11-15页 |
| ·Research Background | 第11页 |
| ·Purpose and Significance of the Study | 第11-12页 |
| ·Objectives of the Present Study | 第12页 |
| ·Layout of the Thesis | 第12-15页 |
| Chapter Two Literature Review | 第15-27页 |
| ·The Studies on Teacher Talk | 第15-19页 |
| ·The definition of teacher talk | 第15页 |
| ·The features of teacher talk | 第15-16页 |
| ·The development stages of studies on teacher talk | 第16-19页 |
| ·The Studies on the Vague Language | 第19-22页 |
| ·The definition of the vague language and its development | 第19-21页 |
| ·The research traditions of vague language | 第21-22页 |
| ·The Vague Language in Teacher Talk | 第22-27页 |
| ·The distribution and classification of the vague language in teacher talk | 第22-25页 |
| ·The necessity of the research on the vague language in teacher talk | 第25-27页 |
| Chapter Three Methodology | 第27-35页 |
| ·Purpose of the Research | 第27页 |
| ·Design of the Research | 第27-28页 |
| ·Subjects of the Research | 第28页 |
| ·Instrument of the Survey-Questionnaire | 第28-32页 |
| ·The Interview | 第32页 |
| ·Class Observation:through Diaries | 第32-35页 |
| Chapter Four The study:Analysis and Discussion | 第35-63页 |
| ·The Results and Analysis | 第35-57页 |
| ·The results of the questionnaire | 第35-50页 |
| ·The discussion of the questionnaire results | 第50-52页 |
| ·The discussion of the interview results | 第52-56页 |
| ·Discussion of the observation results | 第56-57页 |
| ·Summary and Problems with the Realization of the Vague Language in Teacher Talk | 第57-59页 |
| ·Problems with the teacher-centered teaching method | 第58-59页 |
| ·Problems with the "accuracy" -oriented language teaching | 第59页 |
| ·The Linguistic Realization of Vague Language in Teacher Talk | 第59-63页 |
| ·Phonetics level:intonation and stress | 第59-60页 |
| ·Lexical level:homonym,polysemy,deitic expression and number | 第60-61页 |
| ·Syntactical level:part negative sentence,if-conditional constructions, subjunctive mood,open-response questions | 第61页 |
| ·Discourse level:ellipsis and repeat | 第61-63页 |
| Chapter Five Conclusion | 第63-69页 |
| ·Major Findings | 第63-66页 |
| ·Functions of the vague language in teacher talk | 第63-65页 |
| ·The pedagogical implication and suggestions | 第65-66页 |
| ·The Limitations of the Research | 第66页 |
| ·Suggestions to the Future Research | 第66-69页 |
| Bibliography | 第69-71页 |
| ACKNOWLEDGEMENTS | 第71-73页 |
| PUBLISHED PAPERS | 第73页 |
